Let the book explain itself
Meet Starlit — an EPUB reader that explains any selected text, right where you are reading.
inline LOOKup
Look things up without leaving the book.
Looking something up pulls you away, then makes you find your way back. Starlit answers right inside the text, without breaking your flow.
CONTEXT-AWARE EXPLANATION
The answer tailored to the page.
A dictionary can give you twenty definitions. Starlit gives you one that
fits
— and explains why it appears here.
lookup history
Save the extra reading for later.
Some questions are worth asking, but not stopping for. Starlit saves each lookup automatically, so you can keep reading and explore the answer later.
MULTI-LANGUAGE SUPPORT
Explain it in your language.
FAQ
What is Starlit?
Starlit is an EPUB reader for iPhone and iPad. Select any text for an explanation in context, ask a follow-up, or hear it spoken aloud.
Who is Starlit for?
Readers who enjoy books that ask a little more of them: classics, unfamiliar subjects, or books in a second language. If curiosity keeps interrupting your reading, Starlit helps you ask without leaving the page.
What can I read?
EPUB files only for now. PDFs and illustrated books are not yet supported.
How do credits work?
AI lookup and AI speech credits come in separate bundles. Each request uses one credit; cached lookups and same-voice replays use none.
Do credits expire?
No. Credits never expire. They can only be used while Starlit’s AI service is available.
What is always free?
Reading is always free. AI features are optional; the system dictionary, Apple Translate, and your device’s built-in voice use no credits.
Can I read offline?
Yes. You can keep reading offline and use the system dictionary and built-in voice. AI explanations and AI speech require a connection.
How is it different from Kindle or Apple Books?
Starlit doesn’t have a bookshop — you bring your own books. It focuses on going deeper into what you read, not expanding your library.
How is it different from ChatGPT with an EPUB?
Think of it as ChatGPT with an EPUB — only less chatty. One tap gets you an answer, then returns you to the book.
Which languages are supported?
English, Japanese, Simplified Chinese, and Traditional Chinese. Your choice applies to both the interface and AI explanations. If you’d like another language, tell us through Support.